Internal-combustion engine



Jan. 2 1926. 1,569,582

C. W. SCOTT I INTERNAL COMBUSTION ENGINE Filed Feb. 14, 1925 Nix 3% I Patented Jan. 12, 19 2 6.

- UNITED STATES- PATENT OFFICE.

CHARLIE W. 00131, 01 LINCOLNTON, GEbBG-IL INTERNAL-COMBUSTION Enema.

Application filed February 14, 1925. Serial No. 9,210.

To all whom it may concern:

Be it known that I, Cmmmn ,W. Soon, a citizen of the United States, residing at Lincolnton, in the county of Lincoln and State of Georgia, have invented certain newsuch as is used in automobiles, embodies an arrangement of multiple cylinders and pis-I tons reciprocable therein, together with a single crank shaft and connecting rod between .the pistons and cranks.

-It has been observed from time to time that in this well known arrangement of parts, an undesirable degree of friction is generated between the pistons and c linders, and owing to the uneven wear .the

istons against the cylinder walls, leakage, ibss of compression and other disadvanta es result.

aim to improve upon the arrangement briefly described b providing a dual arrangement of cran shafts intergeared for simultaneous rotation in. opposite directions for supplying power to the propeller shaft, the cranks of this shaft being connected with the reciprocating piston by pairs of independent connecting rods.

The fore oing constitutes the principal feature oft e invention, but an important advantage is derived from the use of wear resisting pistons, the pistons inthe present I instance being such inconstructmn that true rectilinear reciprocation is assured at alltimes. y Other features, advantages, and structural differences over the common engine structure will become apparent from the following description and drawing.

In the accompanying drawing forming a part of this application and in which like numerals are em parts throughout t e same: I

Figure 1 is a central vertical longitudinal section through an internal combustion engine constructed. in accordance with the present invention, portions being shown 1n elevation.

Fig. 2 is a vertical transverse: section down into the crank case -3.'

loyed to designate likevv taken approximatel on the lane of the line 22 of Fig. 1. y p

Referring to the drawing in detail, the A reference character 1 indicates generally the lmproved cylinder head which, as is customary, is provided with an ap ropriate' water circulating jacket '2 for coo ing purposes. v p

Associated with the bottom of the cylinder head is a crank case 3, the configuration of which is such as to accommodate rotation of the oppositely moving crank shafts 4 and 5 respectively. At their forward ends, these crank shafts are geared together by intermeshing gears 6. The gears rotate in the direction obvious from Fig. 2. As stated, the cylinder head embodies a plurality of cylinders 7 in which piston heads 8 are slidable.

. Inasmuch as each cylinder and piston together with its connection with the crank shafts is the same, the descri tion will now.

appear in the singular, it being understood that all likereference characters designate like arts.

- Directin attention to. Fig.2 it.will be seen that t e piston head 8 is provided with an internal cross pin19 with which a substantially flat stem 10 has pivotal connection. The stem extends downwardly into the elongated portion of the cylinder and is provided with .spaced arallel arms 11 which are in turn provi ed at their lower ends with substantially semi-circular arouate shoes 12. The adjacent ends of the shoes are spaced apart and opposite these spaced ends are vertical'slots 13 formed in the lower extended end of the cylinder.

As seen'in the figure referred to the ex tended slotted end of the cylinder extends I Extending through the arms 11 outward of the shoes 12 is a cross pin 14 to which a substantially triangular connector 15 is connected. This connector isprovided with appropriate bearings, .oneof which is connected with the pin as stated and the other two of" which are connected with the upperends of duplic'ate connecting rods 16 and 17.

The connecting rods are connected at ioo their lower ends to the cranks of the aforesaid crank shafts 4 and5. The connecting rods .work through the slots 13. If de-' sired, a reinforcing spider 18-1nayexte -d crosswise of and be connected to the arcuate shoes12. i

' crank shafts 4; and 5 in o Asthe piston is driven downwardly under the action of the explosion, the conne'eting rods 16 and 17 serve to rotate the osite directions and to impart correspon 1n rotation to the intermeshing gears 6. T e proper an.- gli'ng of the connecting rod is ermitted by the triangular connector 15 between the rockable stem of the piston and the pin 14; with which it is connected.

It is thought that an en ine constructed in accordance with the description and drawing will serve to decidedly increase the degree of power and will insure a more continuous rotation of the propeller shaft. Under the construction specified, it is thought that greater power will be derived, undue heating will be eliminated owing to the diminished friction, and an altogether -more eflicient operation will be insured.

:These and other features and advantages of the invention have doubtless been made a parent by the foregoing description and t e accom anying drawing. For this rea- "son, it is t ought that a more lengthy disscription' is unessentialQ Although the preferred embodiment .of

. the invention has been shown and specifivention claime cally'described, it is to be understood that changes comin within the field of the inmay be resorted to if desired.

Having thus described my invention, what I claim as new is 1. In an engine structure of the type specified, an elongated cylinder the wall of which is rovided at its lower end with diametrica ly opposite slots opening through the bottom, a piston slidable in said cylinder, a connecting rod pin carried by said piston, a stem connected to said pin, spaced arms de ending from said stem and rovided at the1r lower ends with substantially arcuate shoes in slidable contact with the opposed walls of the cylinder, a triangular connector connected with said arms, connecting rods connected with said connector, and intergeared simultaneously operated crank shafts with which the lower ends of said connecting rods are 1 In testimony whereof I afiix my signature.-

CHARLIE W. sco'r'r. 

